On 8/23/2016 3:19 PM, Doug Dumitru wrote:
> Mr. Ledford,
>
> I am glad that we are in agreement. My issue is that if the customer
> is reading 4GB/sec with a non-degraded array, the degraded array
> should only have 2X the number of IOs and 2X the transfer sizes to the
> drives. If the data rate falls to 1GB, I can suspect cpu overhead.
> With this case falling to 200MB/sec, then something else is going on.
>
> SSDs tend to be very "flat" reading from q=1 up to about q=20 assuming
> the HBAs can keep up.
Is he using SSDs? If so, I missed that bit. I wrote my response
assuming rotating media.
--
Doug Ledford <dledford@xxxxxxxxxx>
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